TM 1-1510-225-10 9-15 IF THE GEAR WILL NOT RETRACT: 2.  Fuel load – Reduce. 3.  Crew and passenger briefings – Complete. 4.  Loose equipment – Stow/secure. 5.  BLEED   AIR   VALVES    –    ENVIR   OFF (below 10,000 feet). 6.  Cabin   pressure   switch   –   DUMP   (after cabin has depressurized). Prior   to   removing   the   emergency   exit hatch, slow to a safe airspeed, approximately   160   KIAS   or   below,   and ensure  passengers  are  seated  with  seat belts   fastened   and   all   loose   equipment secured. 7.  Emergency   exit   hatch   –   Remove   and secure. 8.  Seat belts and harnesses – Fasten. 9.  Extension handle – Stow. 10.   LDG GEAR CONTROL – DN. 11.   LANDING GEAR RELAY circuit breaker – Pull. 12.   LANDING    GEAR    WARN    horn    circuit breaker – Pull. 13.   Nonessential electrical equipment – Off. 14.   Before landing checklist – Complete. 15.   FLAPS – As required. 16.   Airspeed – Normal approach speed. 17.   POWER lever – IDLE when landing on the desired touchdown area is assured. 18.   CONDITION lever – FUEL CUTOFF. AFTER STOPPING: 19.   Fuel   FIREWALL  SHUTOFF  VALVES   – CLOSED. 20.   MASTER SWITCH – OFF. f.   Landing  With  Flat  Tire(s).    If  aware  that  a main gear tire(s) is flat, a landing close to the edge of the runway opposite the flat tire will help avoid veering off  the  runway.    If  the  nose  wheel  tire  is  flat,  use minimum braking. 9-31.  LANDING WITH INOPERATIVE WING FLAPS (UP). The    aircraft    does    not    exhibit    any    unusual characteristics  when  landing  with  the  flaps  up.    The approach  angle  will  be  shallow  and  the  touchdown speed will be higher, resulting in a longer landing roll. 9-32.  CRACKED WINDSHIELD. a.  External   Crack   In-flight.      If   an   external windshield  crack  is  noted,  no  action  is  required  in flight. NOTE Heating   elements   may   be   inoperative   in areas of crack. b.  Internal  Crack  In-flight.    If  it  is  determined that  an  internal  crack  has  occurred  in  flight,  perform the following: 1.  Descend – Below 25,000 feet. 2.  Cabin pressure – Reset pressure differential  to  maintain  4.0  psi  or  less  as required. 9-33.  CRACKED CABIN WINDOW. If  crack(s)  in  a  cabin  window  ply(s)  occurs  in flight, perform the following: 1.  Crew  oxygen  masks  –  100%  and  on  (if above 10,000 feet). 2.  CABIN   signs   switch   –   NO   SMOKE   & FSB. 3.  Passenger  oxygen  –  On  and  checked  (if above  10,000  feet).    The  copilot  should confirm  that  all  passengers  have  oxygen masks on and are receiving supplemental oxygen if required. 4.  Cabin pressure – Depressurize. 5.  Land  as  soon  as  practicable.    If  a  cabin window has developed a crack, the aircraft shall  not  be  flown  once  landed,  without proper ferry flight authorization. WARNING H